Hopefully you'll read all before judging or criticizing me.
I own 4 dogs (all Chis) 3 males and 1 female
3 males do not get along with each other or other dogs
They live separated and are rotated throughout the day to have a minimum amount of fights. There hasn't been a fight in a couple of months.
I've been wanting to rehome Buddy Bear because he deserves a home where he isn't barking and "guarding" the other dogs. A place where he'll be the only dog.
No one of course wants him (not even rescues or shelters) because he's dog aggressive.
I don't have the heart to take him to a "kill-Shelter"
I'm not giving up on him I just feel overwhelmed. Buddy bear and Jr have been at each other for about 3 years or so.
Buddy Bear and Jojo have been at since November (2016).
Jr has always been at it with Jojo.
And just recently Jojo will actually try to fight back.
I think I might just stop stressing about it and just let it be.
But seriously having dogs that constantly want to fight isn't cool and feels draining.
Yes I understand I made a commitment to these dogs the day I got them, this is why I'm not giving up on any of them but it doesn't make it any easier.
I also understand that there are people who also have dogs in the same household and constantly at each other and they are much larger breeds.
And no I can't afford a trainer.

The only thing I would add, is a pheramone spray/diffuser that you can get at the Pet/co PetSmart stores. It MIGHT help. Spray it where the dogs are. Iris pens are also a life saver in this situation. They could see each other, but couldn't get at each other. I know that 4 Iris pens might be costly, but shutting them away from each other has not helped either. Good luck.

I am not here to criticize .. you are offering a home to these chi guys which I appreciate.
We also hve 4 chis, 3 boys and one girl. Two of my boys are 13, and 12 years old. The young male is only 6 months, so of course my older guys have little patience with the fact the puppy is always in "play" mode. Fortunately, our girl who is 7 years old has a lot of patience with him. When she does tire of his antics, she will get stern and put him in his place.. then he will usually get in one of the dog beds and take a much needed nap. We do not interfere with her discipline of the pup. She is not trying to hurt him and he does not come back at her. (I think this is due to the male/female relationship.)

Now as to my older boys, the 13 year old has a heart murmur and takes meds for his heart. Naturally, we don't want him upset or fighting at all. He is neutered which takes aggressiveness down a notch. He will give the pup a stern growl to go away and we make certain the little guy complies. They are only in the room together when we are home. If we go out, Neko (13 yr. old) is put in our bedroom which he loves as he naps alot at his age.

Our 12 year old, Buster, is blind and is also neutered. Mick (the baby) is aware that Buster (12 yr. old) is different.
Mick really does not pester Buster very much, but if he does get on Buster's nerves then he gets a stern growl and again we make certain the pup backs off. We are comfortable leaving Buster out with Mick and Snow (our girl) when we go out. Buster also naps alot at his age, and Snow and Mick usually curl up together separate from Buster. (We have 5 doggie beds in our living area, so Buster has no problem napping away from the baby.)

Mick will be 7 months old on June 2nd, and we will be having him neutered then (the age our vet recommends for this procedure), and I feel this will reduce his hormones considerably which will improve the relationships with the two old males also.

I think the suggestion of a couple of Iris Pens for you boys may be a viable solution for you. Two in the pens, and one out.. then rotate them so all get the same amount of freedom. Perhaps seeing each other, but unable to make contact to fight will allow them to become more tolerant.
Also, I am assuming all your males are neutered, if not.. that would be something I would have done immediately to help with the aggression towards one another.
Best of luck from my house to yours..

__________________"There’s no changing people, and we can’t even help people with whom we’re emotionally involved. Let them be, stop expecting things from people who cannot provide those things, and recognize that we can live happy, productive lives regardless of what others, even close relatives, are doing or saying."

It's totally understandable that this situation is stressing you out. Don't feel bad for arriving at this point where you're considering rehoming.

I understand that hiring a trainer is expensive. There are a lot of good training advice online to stop dogs from fighting, that you could try to maybe fix (or at least ease) the situation. Other than separating them, what other techniques have you tried so far?

I agree with chideb as well, I would neuter them (if they aren't already).

But otherwise I like Susan's play pen idea. That way they can all be together, but unable to fight and I feel like it would be better in the long run than having them completely separated.

Thank you all for actually understanding my frustration at this point. I'm less stressed today than I was Friday. I took a break to everything dog (I took care of my dogs of course and went to Petsmart today) but I stayed away researching things and solutions for the dogs which helped.
They are separated but:
Each dog has a kennel 3 have a crate and Jojo has a kennel (he seems to be more comfortable since it's closed in than the crate)
They see each other "passing" by because all 4 kennels are inside the same room inside the house. As soon as they do they all bark like crazy.
Outside I have a large black crate and a kennel run. I put Jojo in the kennel run and Buddy Bear runs around and vice versa. They tend to "fight" more when I'm in the backyard or when I enter the kennel run really gets them going. But they have "learned" that they have their own space but still get to see each other and sharing the same yard.
When Jr is out he gets put in the kennel run and Jojo gets put in the black crate. If it's not Jojo than its Buddy Bear. Jr has finally "learned" when he walks out not to bark at Buddy Bear in the large crate outside. I can never get Buddy Bear to stop barking
I have done "positive" training as in having one dog doing commands while the other one watching. It tends to go better when its outside but if both dogs on a leash all goes crazy. And inside once the treats leave all goes wrong.
Today I had Jr in the kennel run and Buddy Bear in the large crate outside. I took Jojo to the back yard on a leash. And Buddy bear and Jr barked. Eventually Jr stopped barking. And I had Jojo walk near the kennel run and sit on command. I'm hoping if they get use to each other looking at each other in the backyard and have Jojo run around and Jr be in the Kennel run.
I keep them on a "schedule" because Jr doesn't do well to change and I'm the type of person to keep to a schedule. And we've had it for a very long time and they see each other and know they are there. And yet they can get use to each other.
I'd be okay if they completely didn't like each other but not bark every time they hear each other.
I looked up the spray/diffuser thing. And it's actually a spray can that you can spray them with it "redirects" their attention. But I'm not sure if it'll work because they are extremely stubborn.

There is a pheromone plug-in that is supposed to smell like a nursing mom.Supposed to relax dogs. You plug it in the room that the dogs are in. The spray is, I think to spray their crates, beds etc. not so much the dogs themselves. The spray on the dog is an adversive sound.

I am wondering if you had done any training with giving treats when the dog walking by, the others are given treats. This will take a long time, 'cause you have many dogs. The idea is that when they see a loose dog, treats rain down!! good luck with this, I know how frustrating barking can be!